Implement foe cutting cloth



IUNITED STATES `PATENT OFFICE'.

GEO. W. GRISWOLD, OF CARBONDALE, PENNSYLVANIA.

IMPLEMENT FOR CUTTING CLOTH.

Specification of Letters Patent No. 10,132, dated October 18, 1853.

To all whom t may concern.'

Be it known that I, GEORGE W. GRIswoLD, of the city of Carbondale,Luzerne county, Pennsylvania, have invented a new and useful Improvementin Cutting Apparatus for Drapers, Tailors, and Others; and I herebydeclare that the following is a full and eX- act description thereof.

It is called George IV. Griswolds magic counter knife.

To enable others to make and use the apparatus I proceed to describe itsconstruction and operation, reference being had to the drawings heretoannexed and making part of this specification.

Figure l is a plan of the apparatus or top view; Fig. 2 side elevation,when partially opened; Fig. 3 longitudinal vertical section showing thewaved channel; Fig. 4 the top jaw of the apparatus; Fig. 5 the underportion; Fig. 6 enlarged view of the sliding knife, in perspective; Fig.7 the apparatus with a piece of cloth in it to be cut.

The under portion, C, of the apparatus, is a strip, similar in form to ayard stick (longer or shorter as desired) with a longitudinal channel inthe upper side of it. The channel is of unequal depth in its coursehthebottom line being waved, as shown at Fig. 3. The bottom of the channelis made smooth, so that the foot F of the knife, G, will slide easilyover it. The upper portion or jaw, A, is hinged upon the under part, C,in such a way that it will shut over it on each side. This upper jaw isseen at Fig. et, the under side of it being shown. This is channeled soas to clasp over the under piece, and has a narrow slot the greater partof its length. On each side of this upper jaw, A, there is a bevel ordovetail channel-see Fig. 2.

The sliding knife apparatus is seen, (under side of it) at Fig. 6. It isa piece B, aboutfour or five inches long, made to clasp the upper jaw,C, on its upper side. It is put on by squeezing together the upperpiece, C, the sides of which then spring out to their places and thiscap of the sliding knife (Fig. 6) is held in place by the beveledchannels upon the sides of A. The knife is thus attached. A metallicpiece is screwed upon the under side of the cap, B, having a slot in itin which is hinged the knife, G, with a spring under the end, F. Theknife thus sets at an angle (see Fig. 2) with the upper jaw. There is apiece, D, attached to the under portion upon the side at right anglesfor Va square and measure. It may be marked with inches or portions of ayard. To cut off a piece of stuff with this knife the upper jaw, A, israised, as seen Fig. 2 andthe cloth E, passed between the jaws and drawnto a right angle by the square, D, and the upper jaw shut down upon itasseen Fig. 7. The cap, B, of the sliding knife being at the end, as seenFig. 7, is then pushed suddenly across the cloth, and cuts it off withperfect accuracy. The whole operation does not require a second of time.

The knife, if set firm in the cap, B, would always cut in one part ofthe blade and would grow dull. To obviate this the knife rises andfalls; as t-he foot F of the knife, G, runs along the bottom of thewaved channel (seen at Fig. 3) it is made to rise and fall with itsinequalities.

The counter knives may be made of different sizes to suit differentpurposes.

The precision obtained is from clasping the cloth tight while it isbeing cut.

To hold the cloth firmly there are small projections, like pin head onthe top of the under portion, with corresponding depressions on theunder side of the upper jaw, A. The location of them may be in many orall parts-see Fig. 5.

I have described the knife of my apparatus as cut-ting downward, and asmoving on an undulating surface. Now it is obvious that the knife maycut upward, and move upon a single inclined plane, instead of the seriesof curved planes, without in the least departing from the generalfeatures of the invention; and I so contemplate using it if foundessential.

Having thus fully described the nature of my invention what I claimtherein as new and desire to secure by Letters Patent, is.

Stretching the cloth or other material to be cut over the two jaws ofthe stock, and holding it firmly in place by the clamp, while the knifedivides it with a draw cut, substantially as described.

G. W. GRISWOLD.

Titnesses OWEN E. WARREN, WILLIAM THOMPSON.

